Sentences with phrase «julian oscillation»

Currently no phase of the Madden Julian Oscillation (MJO) is favored but phases eight through two are favored over the next two weeks (Figure 14).

Sakaeda N., G. N. Kiladis and J. Dias (April 2017): The Diurnal Cycle of Tropical Cloudiness and Rainfall Associated with the Madden - Julian Oscillation.

The Madden - Julian Oscillation drives storms across the Indian and Pacific oceans every 30 to 60 days.

The most important cycle in tropical weather is known as the Madden - Julian Oscillation (MJO).

Scientists review studies of the tropical Madden - Julian Oscillation to better frame its role in air - sea interactions.

A new modeling study suggests that the triggering of the Madden - Julian Oscillation is dominated by interactions with preceding events.

Some trigger — Rossby waves reflecting off the western margin, the Madden - Julian Oscillation or something else — causes the winds to falter and warm water flows east across the Pacific.

The Australian monsoon exhibits large interannual and intra-seasonal variability, largely associated with the effects of ENSO, the Madden - Julian Oscillation (MJO) and tropical cyclone activity (McBride, 1998; Webster et al., 1998; Wheeler and McBride, 2005).

CAS = Commission for Atmospheric Sciences CMDP = Climate Metrics and Diagnostic Panel CMIP = Coupled Model Intercomparison Project DAOS = Working Group on Data Assimilation and Observing Systems GASS = Global Atmospheric System Studies panel GEWEX = Global Energy and Water Cycle Experiment GLASS = Global Land - Atmosphere System Studies panel GOV = Global Ocean Data Assimilation Experiment (GODAE) Ocean View JWGFVR = Joint Working Group on Forecast Verification Research MJO - TF = Madden - Julian Oscillation Task Force PDEF = Working Group on Predictability, Dynamics and Ensemble Forecasting PPP = Polar Prediction Project QPF = Quantitative precipitation forecast S2S = Subseasonal to Seasonal Prediction Project SPARC = Stratospheric Processes and their Role in Climate TC = Tropical cyclone WCRP = World Climate Research Programme WCRP Grand Science Challenges • Climate Extremes • Clouds, Circulation and Climate Sensitivity • Melting Ice and Global Consequences • Regional Sea - Ice Change and Coastal Impacts • Water Availability WCRP JSC = Joint Scientific Committee WGCM = Working Group on Coupled Modelling WGSIP = Working Group on Subseasonal to Interdecadal Prediction WWRP = World Weather Research Programme YOPP = Year of Polar Prediction

The major climate system indices that are operationally used at ICPAC include evolution of monsoons, medium and upper level winds, Madden - Julian Oscillation (MJO), Quasi Biennial Oscillation (QBO), El Niño Southern Oscillation, Indian Ocean dipole (IOD), tropical cyclones, sea surface temperature gradients among many others that have been derived from general circulation.

[6] There appears to be a 15 - to 25 - day cycle in thunderstorm activity along the ITCZ, which is roughly half the wavelength of the Madden — Julian oscillation (MJO).

In fact for most of February, the East Coast basked in warm spring - like temperatures — due in part to the influences of the Madden - Julian Oscillation and La Niña.

The physics behind mysterious patterns of rainfall in today's atmosphere can now be explored numerically — including the Madden - Julian Oscillation in the tropics.

There is a lot more technical science and theory that could have been discussed in the post like the Walker - Circulation model (from 1923), the Madden - Julian oscillation (which in my mind shows how the ENSO helps drive the PDO and you can see this in the animations of the ENSO region), how the thermocline reacts during ENSO events, Kelvin Waves etc..

Other well - known modes of variability include: The Antarctic oscillation; The Arctic oscillation; The Atlantic multidecadal oscillation; The Indian Ocean Dipole; The Madden — Julian oscillation; The North Atlantic oscillation; The Pacific decadal oscillation; The Pacific - North American teleconnection pattern; The Quasi-biennial oscillation.

Atmospheric Radiation Measurement Madden - Julian Oscillation Investigation Experiment Field Campaign Report.

It is followed by a relaxation event in the western Pacific that is probably triggered by the Madden - Julian Oscillation.

This study evaluates the tropical intraseasonal variability, especially the fidelity of Madden - Julian oscillation (MJO) simulations, in 14 coupled general circulation models (GCMs) participating in the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (AR4).

One of the dominant sources of tropical convective variability is the Madden - Julian Oscillation (MJO), which has a period of approximately 30 - 60 days.

After a two year break travelling abroad I returned to Melbourne to start a PhD on «The Madden - Julian Oscillation: role of air - sea interaction and the MJO - El Niño Southern Oscillation relationship».

When the geopotential energy in the west is sufficiently charged — and perhaps the Madden - Julian Oscillation causes the trade winds to falter — then these piled up waters will surge eastward to crash against the coast of the Americas.

The Madden - Julian Oscillation (MJO) Task Force (hereafter MJO - TF) has the goal to facilitate improvements in the representation of the MJO in weather and climate models in order to increase the predictive skill of the MJO and related weather and climate phenomena.

Kang, and A.D. Del Genio, 2015: Role of longwave cloud - radiation feedback in the simulation of the Madden - Julian Oscillation.

Del Genio, A.D., and Y.H. Chen, 2015: Cloud - radiative driving of the Madden - Julian Oscillation as seen by the A-Train.

A fun little system is the Madden - Julian Oscillation — the wet cell of which is currently over northern Australia adding to the monsoon.

Vertical structure and diabatic processes of the Madden - Julian Oscillation: Biases and uncertainties at short range, Journal of Geophysical Research - Atmospheres, 120 (10): 4749 -4763.

Now that it is possible to simulate the Madden Julian Oscillation (MJO) signal explicitly in global atmospheric models, hypotheses about what controls observed relationships between sea surface temperatures (SSTs) and the MJO can be explored.

We do know that ocean basins produce this oscillatory behavior — the El Nino / Southern Oscillation, the Arctic Oscillation, the Pacific Decadal Oscialltion, the NAO, the Madden - Julian Oscillation (Indian Ocean), but they seem to have a bit of a random component, their forcing mechanisms are poorly understood, their «phase changes» appear impossible to predict very far in advance, and they must also be sensitive to the overall climate warming.

Processes internal to the atmosphere including the Madden - Julian Oscillation (MJO) and low - frequency atmospheric patterns of variability also contribute significantly to the predictability.

Vertical structure and physical processes of the Madden - Julian Oscillation: Linking hindcast fidelity to simulated diabatic heating and moistening, Journal of Geophysical Research - Atmospheres.

Response of the superparameterized Madden - Julian Oscillation to extreme climate and basic state variation challenges a moisture mode view, Journal of Climate, http://dx.doi.org/10.1175/JCLI-D-15-0790.1

For example, deficiencies remain in the simulation of tropical precipitation, the El Niño - Southern Oscillation and the Madden - Julian Oscillation (an observed variation in tropical winds and rainfall with a time scale of 30 to 90 days).

We have warm El Ninos followed by cooler La Ninas, the North Atlantic Oscillation, the Pacific Decadal Oscillation, the Julian Oscillation,... When we want to refer to them as a whole, we will call it «internal variability.»

Their correlations are based on a dynamic mode of variability (the Madden - Julian Oscillation) which has nothing to do with any SST forced response in the clouds.

Of course in tropics the tropical storms have been poorly represented, but so have been Madden Julian Oscillation, easterly waves, monsoons, and just about every phenomena that organizes convection.

The system is «charged up», and El Niño events are then initiated by a «kick» (eg the Madden - Julian Oscillation or westerly wind bursts).

To be sure, this isn't a demonstration that the tropical trends in the model simulations or the data are perfectly matched — there remain multiple issues with moist convection parameterisations, the Madden - Julian oscillation, ENSO, the «double ITCZ» problem, biases, drifts etc..

Simulation of the Madden - Julian Oscillation (MJO) remains unsatisfactory.

Slingo, J.M., P.M. Inness, and K.R. Sperber, 2005: Modelling the Madden Julian Oscillation.

Hendon, H.H., 2000: Impact of air — sea coupling on the Madden — Julian oscillation in a general circulation model.

Sperber, K.R., S. Gualdi, S. Legutke, and V. Gayler, 2005: The Madden - Julian Oscillation in ECHAM4 coupled and uncoupled GCMs.

The Madden - Julian Oscillation is a slow - moving atmospheric pattern that has a large impact on weather throughout the tropics and beyond.

The Madden - Julian Oscillation, or MJO, is a 30 - 60 day atmospheric wave that affects weather from the Indian Ocean to the U.S. Pacific Coast.

Methods: While a few studies in the past investigated the influence of climate phenomena such as the El Niño Southern Oscillation and the Madden - Julian Oscillation on the inter-annual variability of tropical cyclones in the post-monsoon Bay of Bengal, changes in long - term cyclone activity are less well understood.

«Thermodynamics of Madden - Julian Oscillation in a Regional Model with Constrained Moisture.»

On this latter scale teleconnections manifest as a response of middle - latitude weather to the dominant modes of variability of the tropics (the Madden - Julian Oscillation and the Boreal Summer Intra-seasonal Oscillations, which similar to El Niño and La Niña characterize variations of climate but on shorter time scales).

Every 30 - 60 days, something called the Madden - Julian oscillation (MJO) circles the equator, bringing rain and wind wherever it goes.

A mysterious tropical weather pattern called the Madden - Julian oscillation fuels El Niños and triggers rain, heat waves, and hurricanes around the globe.

Had it been a few years later, Madden - Julian oscillation (MJO), a system of storm clouds moving eastward around the Earth, would have been discovered easily by satellites peering down.

«Heat's role in the Madden - Julian Oscillation.»